The invention relates to a ventilating plastic preservative film which is prepared from the following components: 75 parts of polyethylene, 2 parts of sodium alginate, 1 part of sodium epoxycarboxymethylcellulose, 4 parts of polyether sulfone, 4 parts of sucrose fatty acid ester, 1 part of polyethylene resin, 6 parts of mannan, 1 part of chitosan, 7 parts of polyethylene, 5 parts of an anionic antibacterial agent, 4 parts of xylan, 4 parts of glycerinum, 5 parts of acetic acid, 1 part of liquid paraffin, 4 parts of casein, 2 parts of medical stones, 4 parts of chitosan and 5 parts of acetyl citrate. The ventilating plastic preservative film provided by the invention has the beneficial effects that the ventilating plastic preservative film is good in ventilation, relatively satisfactory in moisture-penetrability, flexibility and transparency and low in production cost and has relatively high competitiveness.